package com.ycb.bookserver.inteceptor;

import com.book.constant.JWTClaimsConstant;
import com.book.context.BaseContext;
import com.book.utils.JWTUtils;
import io.jsonwebtoken.Claims;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Component;
import org.springframework.web.method.HandlerMethod;
import com.book.properties.JWTProperties;
import org.springframework.web.servlet.HandlerInterceptor;

/**
 * jwt令牌校验的拦截器
 */
@Component
@Slf4j
public class JwtTokenAdminInterceptor implements HandlerInterceptor {
    @Autowired(required = false)
    private JWTProperties jwtProperties;

    /**
     * 校验jwt
     *
     */
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        System.out.println("当前线程id:"+Thread.currentThread().getId()+"1");
        //判断当前拦截到的是Controller的方法还是其他资源
        if (!(handler instanceof HandlerMethod)) {
            //当前拦截到的不是动态方法，直接放行
            return true;
        }

        //1、从请求头中获取令牌
        String token = request.getHeader(jwtProperties.getAdminTokenName());

        //2、校验令牌
        try {
            log.info("jwt校验:{}", token);
            Claims claims = JWTUtils.parseJWT(jwtProperties.getAdminSecretKey(), token);
            Long Id = Long.valueOf(claims.get(JWTClaimsConstant.ID).toString());
            log.info("当前用户id:{}", Id);

            BaseContext.setCurrentId(Id);
            System.out.println(BaseContext.getCurrentId());
            //3、通过，放行
            return true;
        } catch (Exception ex) {
            //4、不通过，响应401状态码
            response.setStatus(401);
            return false;
        }
    }
}
